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Updated Lifters in the 5.3

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    • March 7, 2023 at 5:09 pm #750454
      Cessna172
      Participant

      The lifter failures reported with the 5.3 with DFM seem to have been fairly widespread and documented, My understanding is that GM has been replacing the failed lifters with an updated lifter.

      Seems to me, at some point the updated lifters should have been incorporated in the manufacturing / assembly process. If this true does anyone have an idea when the new lifters started being used in the 5.3?

    • March 8, 2023 at 6:36 pm #750649
      Parts Man1
      Participant

      All new trucks have the updated lifters

    • March 8, 2023 at 8:45 pm #750659
      Cessna172
      Participant

      Parts Man1 – Thanks for the response. Would that include the 2022 RST build date 5/26/22 which I have been waiting on for the past 10 months?

    • March 9, 2023 at 6:49 pm #750914
      Parts Man1
      Participant

      Yes

    • March 9, 2023 at 8:32 pm #750918
      Cessna172
      Participant

      Thanks again! That’s good to hear.

    • March 28, 2023 at 1:59 pm #753801
      TheOlePartsGuy
      Participant

      This is not true unfortunately. The lifters are the exact same. There has been no change in either the lifter design for OEM builds or OE GM replacement parts. We have a service department full of 2021-2023 vehicles getting lifter jobs and cam jobs and engine replacements, lifters are the exact same. The problem has has never been the lifter, it is the restriction of oil going to them with AFM/DFM and the valve lifter oil manifold. No new lifters.

    • March 29, 2023 at 9:50 am #753925
      Parts Man1
      Participant

      You information is a little off. GM changed I’m going to say probably 2 years ago and I cant speak for your dealership but there is a huge improvement and sales have dropped because of this..

    • April 12, 2023 at 12:17 pm #756062
      TheOlePartsGuy
      Participant

      Mods can someone get user Parts Man1 out of here, he is spreading misinformation and incorrect information on all these posts. Mods you can contact me via information on file in my account, be happy to discuss, but he/she is not helping anyone on here which is what this forum is used for.

    • April 12, 2023 at 6:01 pm #756138
      Parts Man1
      Participant

      WOW! You want me block because your information is incorrect.. Thanks buddy but I’ll continue to post information.

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